<template>
  <layout-box one="商品管理" two="商品列表">
    <el-alert center title="添加商品信息" type="info" show-icon></el-alert>
    <el-steps align-center :space="200" :active="activeIndex - 0" finish-status="success">
      <el-step title="基本信息"></el-step>
      <el-step title="商品参数"></el-step>
      <el-step title="商品属性"></el-step>
      <el-step title="商品图片"></el-step>
      <el-step title="商品内容"></el-step>
      <el-step title="完成"></el-step>
    </el-steps>
    <!-- tab栏区域 -->
    <el-form :model="addForm" :rules="addFormRules" ref="ruleForm" label-width="100px">
      <el-tabs
        :tab-position="'left'"
        v-model="activeIndex"
        :before-leave="beforeTabLeave"
        @tab-click="tabClickd"
      >
        <el-tab-pane label="基本信息" name="0">
          <el-form-item label="商品名称" prop="goods_name">
            <el-input v-model="addForm.goods_name"></el-input>
          </el-form-item>
          <el-form-item label="商品价格" prop="goods_price">
            <el-input v-model="addForm.goods_price"></el-input>
          </el-form-item>
          <el-form-item label="商品重量" prop="goods_weight">
            <el-input v-model="addForm.goods_weight"></el-input>
          </el-form-item>
          <el-form-item label="商品数量" prop="goods_number">
            <el-input v-model="addForm.goods_number"></el-input>
          </el-form-item>
          <el-form-item label="商品分类" prop="goods_cat">
            <el-cascader
              expand-trigger="hover"
              :options="cateList"
              v-model="addForm.goods_cat"
              @change="handleChange"
              :props="cateProps"
            ></el-cascader>
          </el-form-item>
        </el-tab-pane>
        <el-tab-pane label="商品参数" name="1">
          <el-form-item :label="item.attr_name" v-for="item in manyTabData" :key="item.attr_id">
            <el-checkbox-group v-model="item.attr_vals">
              <el-checkbox border :label="cb" v-for="(cb,i) in item.attr_vals" :key="i"></el-checkbox>
            </el-checkbox-group>
          </el-form-item>
        </el-tab-pane>
        <el-tab-pane label="商品属性" name="2">
          <el-form-item
            :label="item.attr_name"
            v-for="item in onlyTabData"
            :key="item.attr_id"
            label-width="200px"
          >
            <el-input v-model="item.attr_vals"></el-input>
          </el-form-item>
        </el-tab-pane>
        <el-tab-pane label="商品图片" name="3">
          <el-upload
            :action="uploadURL"
            :on-preview="handlePreview"
            :on-remove="handleRemove"
            list-type="picture"
            :headers="headerObj"
            :on-success="handleSuccess"
          >
            <el-button size="small" type="primary">点击上传</el-button>
            <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
          </el-upload>
        </el-tab-pane>
        <el-tab-pane label="商品内容" name="4">
          <!-- 富文本编辑器组件 -->
          <quill-editor v-model="addForm.goods_introduce"></quill-editor>
          <el-button type="primary" class="add" @click="add">添加商品</el-button>
        </el-tab-pane>
        <el-tab-pane label="完成" name="5">商品数量</el-tab-pane>
      </el-tabs>
    </el-form>
    <el-dialog title="图片预览" :visible.sync="preViewVisible" width="30%">
      <img :src="preViewPath" alt class="preViewImg" />
    </el-dialog>
  </layout-box>
</template>

<script>
import _ from "lodash";
export default {
  data() {
    return {
      activeIndex: 0,
      //   添加商品的表单数据对象
      addForm: {
        goods_name: "",
        goods_price: "",
        goods_weight: "",
        goods_number: "",
        goods_cat: [],
        pics: [],
        attrs: []
      },
      addFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" }
        ],
        goods_price: [
          {
            required: true,
            message: "请输入商品价格",
            trigger: "blur"
          }
        ],
        goods_weight: [
          {
            required: true,
            message: "请输入商品重量",
            trigger: "blur"
          }
        ],
        goods_number: [
          {
            required: true,
            message: "请输入商品数量",
            trigger: "blur"
          }
        ],
        goods_cat: [
          {
            required: true,
            message: "请输入商品分类",
            trigger: "blur"
          }
        ]
      },
      //   动态参数列表数据
      manyTabData: [],
      //   静态属性列表数据
      onlyTabData: [],
      //   商品分类列表
      cateList: [],
      cateProps: {
        label: "cat_name",
        value: "cat_id",
        children: "children"
      },
      //   上传图片
      uploadURL: "http://127.0.0.1:8888/api/private/v1/upload",
      // 图片上传组件的headers请求头对象
      headerObj: {
        Authorization: window.sessionStorage.getItem("token")
      },
      preViewPath: "",
      preViewVisible: false,
      goods_introduce: ""
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status != 200) {
        return this.$Message.error("获取商品分类失败！");
      }
      //   this.$Message.success("获取商品分类成功！");
      this.cateList = res.data;
      console.log(res.data);
    },
    handleChange() {
      console.log(this.addForm.goods_cat);
      if (this.addForm.goods_cat.length != 3) {
        this.addForm.goods_cat = [];
      }
    },
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$Message.error("请先选择商品分类");
        return false;
      }
    },
    async tabClickd() {
      console.log(this.activeIndex);
      if (this.activeIndex == "1") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: "many"
            }
          }
        );
        if (res.meta.status != 200) {
          return this.$Message.error("获取动态参数列表失败");
        }
        console.log(res.data);
        res.data.forEach(item => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ");
        });
        this.manyTabData = res.data;
      } else if (this.activeIndex == "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "only" }
          }
        );
        if (res.meta.status != 200) {
          return this.$Message.error("获取静态属性列表失败");
        }
        console.log(res.data);
        this.onlyTabData = res.data;
      }
    },
    // 处理图片预览效果
    handlePreview(file) {
      console.log(file);
      this.preViewPath = file.response.data.url;
      this.preViewVisible = true;
    },
    // 处理移除图片的操作
    handleRemove(file) {
      // 获取图片的路径
      const filePath = file.response.data.tmp_path;
      // 拿到图片的索引
      const i = this.addForm.pics.findIndex(x => x.pic === filePath);
      // 将图片移出
      this.addForm.pics.splice(i, 1);
      console.log(this.addForm);
    },
    // 图片上传成功之后的操作
    handleSuccess(response) {
      // console.log(response);
      // 得到一个图片的信息
      const picInfo = { pic: response.data.tmp_path };
      // 将图片信息push到pics中
      this.addForm.pics.push(picInfo);
      // console.log(this.addForm);
    },
    // 添加商品表单验证
    add() {
      this.$refs.ruleForm.validate(async valid => {
        if (!valid) {
          return this.$Message.error("请填写必要的表单项！");
        }
        // 执行添加的业务逻辑
        // lodash clone(obj)
        const form = _.cloneDeep(this.addForm);
        form.goods_cat = form.goods_cat.join(",");

        // 处理动态参数
        this.manyTabData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(" ")
          };
          this.addForm.attrs.push(newInfo);
        });
        // 处理静态属性
        this.onlyTabData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          };
          this.addForm.attrs.push(newInfo);
        });
        form.attrs = this.addForm.attrs;
        console.log(form);
        // 添加商品
        const {data:res} = await this.$http.post("goods",form)
        if(res.meta.status!=201){
            return this.$Message.error("添加商品失败!")
        }
        this.$Message.success("添加商品成功")
        this.$router.push("/goods")
      });
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    }
  }
};
</script>

<style lang='less' scoped>
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.preViewImg {
  width: 100%;
  height: 100%;
}
.add {
  margin-top: 15px;
}
</style>
